12553720

素因数分解:

$2^3\times 5^1\times {\mathrm{157}}^1\times {\mathrm{1999}}^1$

素因数の和:2167

約数の個数: 32

約数和(自身を含む): 28440000

約数和(自身を除く): 15886280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 157, 314, 628, 785, 1256, 1570, 1999, 3140, 3998, 6280, 7996, 9995, 15992, 19990, 39980, 79960, 313843, 627686, 1255372, 1569215, 2510744, 3138430, 6276860, 12553720]

約数ペア:

[(1, 12553720), (2, 6276860), (4, 3138430), (5, 2510744), (8, 1569215), (10, 1255372), (20, 627686), (40, 313843), (157, 79960), (314, 39980), (628, 19990), (785, 15992), (1256, 9995), (1570, 7996), (1999, 6280), (3140, 3998)]